DK0474930T3 - Amplification with directly connected, cascade-coupled amplifiers - Google Patents
Amplification with directly connected, cascade-coupled amplifiersInfo
- Publication number
- DK0474930T3 DK0474930T3 DK90309945.5T DK90309945T DK0474930T3 DK 0474930 T3 DK0474930 T3 DK 0474930T3 DK 90309945 T DK90309945 T DK 90309945T DK 0474930 T3 DK0474930 T3 DK 0474930T3
- Authority
- DK
- Denmark
- Prior art keywords
- amplifier
- port
- signal
- amplifiers
- cascade
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2178—Class D power amplifiers; Switching amplifiers using more than one switch or switching amplifier in parallel or in series
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/405—Indexing scheme relating to amplifiers the output amplifying stage of an amplifier comprising more than three power stages
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
A signal is amplified with a plurality of amplifiers (12-18), each amplifier having a reference port (22), a reference node (C) coupled to the reference port, and a signal port (22), and each amplifier being supplied by a power source (30-36) with operating potential with respect to the reference node that is coupled to the reference port of that amplifier. The amplifiers (12-18) are cascaded in a manner selected so that the output of a first amplifier (12) (which receives the signal to be amplified at its input port) drives the reference node (22) of a second amplifier (14), and the reference node (22) of the first amplifier (12) provides an input at the signal port (20) of the second amplifier (14), whereby the first and second amplifiers are directly coupled together to amplify the applied signal. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/328,051 US4973919A (en) | 1989-03-23 | 1989-03-23 | Amplifying with directly coupled, cascaded amplifiers |
Publications (1)
Publication Number | Publication Date |
---|---|
DK0474930T3 true DK0474930T3 (en) | 1996-06-17 |
Family
ID=23279299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK90309945.5T DK0474930T3 (en) | 1989-03-23 | 1990-09-11 | Amplification with directly connected, cascade-coupled amplifiers |
Country Status (9)
Country | Link |
---|---|
US (1) | US4973919A (en) |
EP (1) | EP0474930B1 (en) |
AT (1) | ATE134088T1 (en) |
AU (1) | AU629685B2 (en) |
CA (1) | CA2024850C (en) |
DE (1) | DE69025324T2 (en) |
DK (1) | DK0474930T3 (en) |
ES (1) | ES2085896T3 (en) |
GR (1) | GR3019358T3 (en) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4973919A (en) * | 1989-03-23 | 1990-11-27 | Doble Engineering Company | Amplifying with directly coupled, cascaded amplifiers |
DE4139762C2 (en) * | 1991-12-03 | 1996-09-12 | Daimler Benz Aerospace Ag | Circuit arrangement for switching high capacitive loads at a certain voltage level |
US5317277A (en) * | 1992-12-08 | 1994-05-31 | Doble Engineering Company | Power amplifying apparatus for supplying A.C. signals having a maximum loop gain at a desired frequency |
US8362838B2 (en) * | 2007-01-19 | 2013-01-29 | Cirrus Logic, Inc. | Multi-stage amplifier with multiple sets of fixed and variable voltage rails |
US7667408B2 (en) * | 2007-03-12 | 2010-02-23 | Cirrus Logic, Inc. | Lighting system with lighting dimmer output mapping |
US8018171B1 (en) | 2007-03-12 | 2011-09-13 | Cirrus Logic, Inc. | Multi-function duty cycle modifier |
US7852017B1 (en) | 2007-03-12 | 2010-12-14 | Cirrus Logic, Inc. | Ballast for light emitting diode light sources |
US8076920B1 (en) | 2007-03-12 | 2011-12-13 | Cirrus Logic, Inc. | Switching power converter and control system |
US20080224631A1 (en) * | 2007-03-12 | 2008-09-18 | Melanson John L | Color variations in a dimmable lighting device with stable color temperature light sources |
US7696913B2 (en) | 2007-05-02 | 2010-04-13 | Cirrus Logic, Inc. | Signal processing system using delta-sigma modulation having an internal stabilizer path with direct output-to-integrator connection |
US7554473B2 (en) | 2007-05-02 | 2009-06-30 | Cirrus Logic, Inc. | Control system using a nonlinear delta-sigma modulator with nonlinear process modeling |
US8102127B2 (en) * | 2007-06-24 | 2012-01-24 | Cirrus Logic, Inc. | Hybrid gas discharge lamp-LED lighting system |
US7804697B2 (en) | 2007-12-11 | 2010-09-28 | Cirrus Logic, Inc. | History-independent noise-immune modulated transformer-coupled gate control signaling method and apparatus |
US8576589B2 (en) | 2008-01-30 | 2013-11-05 | Cirrus Logic, Inc. | Switch state controller with a sense current generated operating voltage |
US7755525B2 (en) * | 2008-01-30 | 2010-07-13 | Cirrus Logic, Inc. | Delta sigma modulator with unavailable output values |
US8008898B2 (en) | 2008-01-30 | 2011-08-30 | Cirrus Logic, Inc. | Switching regulator with boosted auxiliary winding supply |
US8022683B2 (en) | 2008-01-30 | 2011-09-20 | Cirrus Logic, Inc. | Powering a power supply integrated circuit with sense current |
US7759881B1 (en) | 2008-03-31 | 2010-07-20 | Cirrus Logic, Inc. | LED lighting system with a multiple mode current control dimming strategy |
US8008902B2 (en) | 2008-06-25 | 2011-08-30 | Cirrus Logic, Inc. | Hysteretic buck converter having dynamic thresholds |
US8279628B2 (en) | 2008-07-25 | 2012-10-02 | Cirrus Logic, Inc. | Audible noise suppression in a resonant switching power converter |
US8212491B2 (en) | 2008-07-25 | 2012-07-03 | Cirrus Logic, Inc. | Switching power converter control with triac-based leading edge dimmer compatibility |
US8344707B2 (en) | 2008-07-25 | 2013-01-01 | Cirrus Logic, Inc. | Current sensing in a switching power converter |
US8487546B2 (en) * | 2008-08-29 | 2013-07-16 | Cirrus Logic, Inc. | LED lighting system with accurate current control |
US8179110B2 (en) | 2008-09-30 | 2012-05-15 | Cirrus Logic Inc. | Adjustable constant current source with continuous conduction mode (“CCM”) and discontinuous conduction mode (“DCM”) operation |
US8222872B1 (en) | 2008-09-30 | 2012-07-17 | Cirrus Logic, Inc. | Switching power converter with selectable mode auxiliary power supply |
RU2402862C2 (en) | 2008-09-30 | 2010-10-27 | Игорь Владиславович Захаров | Variable signal converter |
US8288954B2 (en) * | 2008-12-07 | 2012-10-16 | Cirrus Logic, Inc. | Primary-side based control of secondary-side current for a transformer |
US8299722B2 (en) | 2008-12-12 | 2012-10-30 | Cirrus Logic, Inc. | Time division light output sensing and brightness adjustment for different spectra of light emitting diodes |
US8362707B2 (en) * | 2008-12-12 | 2013-01-29 | Cirrus Logic, Inc. | Light emitting diode based lighting system with time division ambient light feedback response |
US7994863B2 (en) * | 2008-12-31 | 2011-08-09 | Cirrus Logic, Inc. | Electronic system having common mode voltage range enhancement |
US7859333B2 (en) * | 2009-02-03 | 2010-12-28 | Triquint Semiconductor, Inc. | Power amplifier with reconfigurable direct current coupling |
US8482223B2 (en) * | 2009-04-30 | 2013-07-09 | Cirrus Logic, Inc. | Calibration of lamps |
US8963535B1 (en) | 2009-06-30 | 2015-02-24 | Cirrus Logic, Inc. | Switch controlled current sensing using a hall effect sensor |
US8198874B2 (en) | 2009-06-30 | 2012-06-12 | Cirrus Logic, Inc. | Switching power converter with current sensing transformer auxiliary power supply |
US8248145B2 (en) | 2009-06-30 | 2012-08-21 | Cirrus Logic, Inc. | Cascode configured switching using at least one low breakdown voltage internal, integrated circuit switch to control at least one high breakdown voltage external switch |
US8212493B2 (en) | 2009-06-30 | 2012-07-03 | Cirrus Logic, Inc. | Low energy transfer mode for auxiliary power supply operation in a cascaded switching power converter |
US9155174B2 (en) * | 2009-09-30 | 2015-10-06 | Cirrus Logic, Inc. | Phase control dimming compatible lighting systems |
US8654483B2 (en) | 2009-11-09 | 2014-02-18 | Cirrus Logic, Inc. | Power system having voltage-based monitoring for over current protection |
US8183921B1 (en) | 2010-11-24 | 2012-05-22 | Altera Corporation | Offset cancellation for continuous-time circuits |
US8957801B2 (en) * | 2012-06-11 | 2015-02-17 | Dan Raphaeli | Method and system for flash type analog to digital converter |
US9401687B2 (en) * | 2013-04-09 | 2016-07-26 | Honeywell International Inc. | Voice alarm amplifier |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3423689A (en) * | 1965-08-19 | 1969-01-21 | Hewlett Packard Co | Direct current amplifier |
JPS5325481Y2 (en) * | 1972-09-21 | 1978-06-29 | ||
US4454480A (en) * | 1981-07-15 | 1984-06-12 | Allfather Lars P | Amplifying with cascaded class B amplifiers |
FR2555839B1 (en) * | 1983-11-25 | 1986-01-24 | Thomson Csf | BROADBAND AMPLIFIER-LIMITER DEVICE |
US4559502A (en) * | 1984-04-19 | 1985-12-17 | Signetics Corporation | Multi-stage amplifier with capacitive nesting for frequency compensation |
US4717889A (en) * | 1986-09-02 | 1988-01-05 | Electro-Voice, Incorporated | Power control system for periodically and selectively energizing or shorting primary windings of transformers for controlling the output voltage across a common secondary winding |
US4973919A (en) * | 1989-03-23 | 1990-11-27 | Doble Engineering Company | Amplifying with directly coupled, cascaded amplifiers |
-
1989
- 1989-03-23 US US07/328,051 patent/US4973919A/en not_active Expired - Lifetime
-
1990
- 1990-09-07 CA CA002024850A patent/CA2024850C/en not_active Expired - Fee Related
- 1990-09-10 AU AU62326/90A patent/AU629685B2/en not_active Ceased
- 1990-09-11 ES ES90309945T patent/ES2085896T3/en not_active Expired - Lifetime
- 1990-09-11 EP EP90309945A patent/EP0474930B1/en not_active Expired - Lifetime
- 1990-09-11 DE DE69025324T patent/DE69025324T2/en not_active Expired - Fee Related
- 1990-09-11 DK DK90309945.5T patent/DK0474930T3/en active
- 1990-09-11 AT AT90309945T patent/ATE134088T1/en active
-
1996
- 1996-03-19 GR GR960400757T patent/GR3019358T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
CA2024850A1 (en) | 1992-03-08 |
AU6232690A (en) | 1992-06-04 |
ATE134088T1 (en) | 1996-02-15 |
AU629685B2 (en) | 1992-10-08 |
GR3019358T3 (en) | 1996-06-30 |
EP0474930B1 (en) | 1996-02-07 |
ES2085896T3 (en) | 1996-06-16 |
EP0474930A1 (en) | 1992-03-18 |
US4973919A (en) | 1990-11-27 |
DE69025324T2 (en) | 1996-06-20 |
CA2024850C (en) | 1999-11-09 |
DE69025324D1 (en) | 1996-03-21 |
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